CN1109073C - Aromatic polycarbonate resin composition - Google Patents

Abstract

The aromatic polycarbonate resin composition having a hydroxyl group as a terminal group is thermally stable and also provides excellent hydrolysis resistance. The polycarbonate resin composition includes: (A) an aromatic polycarbonate resin containing hydroxyl groups accounting for 5% or more of all terminal groups and metal impurities, and (B) selected from phosphoric acid, sulfur Passivator for ether compounds, phosphite diesters and nitrogen-containing organic compounds. The amount of passivating agent depends on the amount of metal impurities in (A) and the type of passivating agent.

Description

Aromatic polycarbonate resin composition

The present invention relates to comprise resin combination oh group, stable, aromatic polycarbonate (being referred to as PC sometimes).

The conventional preparation method of aromatic polycarbonate knows.For example, open (Kokai) the flat 2-175723 of the patent application of Japanese unexamined, open (Kokai) the flat 2-124934 of the patent application of day original examination, United States Patent (USP) № 4,001,184, United States Patent (USP) № 4,238,569, United States Patent (USP) № 4,238,597 and United States Patent (USP) № 4,474,999 described by dihydric phenol and carbonic diester transesterify or transesterification and the method for knowing of polycarbonate synthesis under molten state; Method, particularly interfacial that phosgene and dihydric phenol are reacted in solvent solution.

Compare with the polycarbonate that uses phosgenation to obtain, because melt phase polycondensation neither uses phosgene also not use the chloro solvent, therefore, the residual chlorine content in the polycarbonate that is obtained by this method seldom.Yet, because scorification carries out polymerization by using ester-interchange method, so the usually mole control recently by raw material of blocking method, and the hydroxyl of some per-cents will be present in the composition in the raw material.On the contrary, in phosgenation (interfacial), be based on the consumption of end-capping reagent or chain terminator by the resulting hydroxyl amount of raw material.

Having hydroxyl is stable as the polycarbonate of end group, and with respect to short-term heating as in any case to be shaped in mould be also what problem can not occur, but described polycarbonate has some potential problems really, promptly these oh groups may with impurity in the polycarbonate for example and/or come from during molding will with the reactions such as metal of polycarbonate blended mould machine.Processing temperature is high more, and the possibility that described reaction takes place is just big more.Therefore, just have such possibility, that is, described reaction may cause beyond thought fade and/or polycarbonate molecular weight reduces such problem.Particularly, in recent years, when with aromatic polycarbonate mould-forming lens and CD, processing temperature surpasses 300 ℃, and its purpose is to obtain surface smoothing and reduces unrelieved stress.Particularly, in the occasion of CD, it has been common thing that temperature surpasses 320 ℃.In addition, processing temperature is about 350 ℃ when the ultra-thin CD of processing.Carry out molding under such high temperature, the problem that needs at utmost to be concerned about is to fade and because the product strength decline that the decline of molecular weight causes; Therefore, for the polycarbonate resin of high thermal stability, need prevent described such problem.

In the polycarbonate by the scorification preparation, the most probable impurity that is present in the PC resin is metal ion.Yet, because the metal ion inclusion usually from raw material and also from the used material of preparation feedback device, therefore, is difficult to eliminate fully these impurity.The flat 2-175722 of Japanese Unexamined Patent Application open (Kokai) confirms that metal ion and some chlorine are present in the polycarbonate of scorification preparation, and, can improve hydrolytic resistance by increasing polycarbonate purity.In any case, during secondary processing, metal or metal ion can the mould-forming phase from, for example, extruder barrel wall, screw rod etc. are introduced into.Therefore, there is certain restriction in this method, and in order to stablize the polycarbonate that contains oh group of fusion preparation, people extremely wish to provide the method for bigger stabilization.

The objective of the invention is to, a kind of aromatic carbonate resin combination with hydroxyl as end group or END CAPPED GROUP is provided, described composition is heat-staple and has excellent hydrolytic resistance.

To the concentrating on studies of the stability of hydroxyl polycarbonate, now drawn such principle by present inventor etc., that is, wished to predict the interaction of oh group and metal in advance, and make the effect passivation of metal, so that prevent COLOR FASTNESS PROBLEM.Therefore, discoveries such as present inventor are counted about 1～about 100 moles phosphoric acid when adding with every mole metal in the polycarbonate of hydroxyl group and metal, or about 1～about 1000 moles sulfide compound, or about 1～about 1000 moles phosphorous acid diester; Be the nitrogenous organic compound (heavy metal deactivator) of about 10～about 500ppm perhaps, can make aromatic polycarbonate become very stable, thereby realize the present invention with described hydroxyl with every weight part aromatic polycarbonate.

The invention provides a kind of poly carbonate resin composition, it comprises: the aromatic polycarbonate resin and the metallic impurity that (A) contain the oh group that accounts for all end group 5% ratios at least, and (B) a certain amount of passivator that is selected from the group that following material forms: its consumption is counted about 1～about 100 moles phosphoric acid with every mole of metallic impurity that are included in the component (A), its consumption is counted about 1～about 1000 moles sulfide compound with every mole of metallic impurity that are included in the component (A), its consumption is counted about 1～about 1000 moles phosphorous acid diester with every mole of metallic impurity that are included in the component (A), perhaps its consumption with every weight part aromatic polycarbonate count about 10～about 500ppm nitrogenous organic compound-it is a kind of heavy metal deactivator.

One embodiment of the invention provide a kind of poly carbonate resin composition, it is characterized in that, said composition comprises: (A) contain the aromatic polycarbonate resin of the oh group that accounts for all end group 5% ratios at least and (B) phosphoric acid; Wherein the consumption of (B) phosphoric acid is counted about 1～about 100 moles with every mole of metallic impurity that are included in the component (A).

Second embodiment of the present invention provides a kind of poly carbonate resin composition, said composition contains: (A) contain the aromatic polycarbonate resin of 5% or the above oh group that account for all end groups and (B) sulfide compound, wherein the consumption of (B) sulfide compound is counted about 1～about 1000 moles with every mole of metallic impurity that are included in the component (A).

The 3rd embodiment of the present invention provides a kind of poly carbonate resin composition, said composition contains: (A) contain the aromatic polycarbonate resin of 5% or the above oh group that account for all end groups and (B) phosphorous acid diester, wherein the consumption of (B) phosphorous acid diester is counted about 1～about 1000 moles with every mole of metallic impurity that are included in the component (A).

The 4th embodiment of the present invention provides a kind of poly carbonate resin composition, said composition contains: (A) contain the aromatic polycarbonate resin of 5% or the above oh group that account for all end groups and (B) phosphorous acid diester, the amount of wherein contained herein (B) sulfide compound is nitrogenous organic compound, it is a kind of heavy metal deactivator, and its consumption is that every weight part aromatic polycarbonate is from about 10～about 500ppm.

Preferably, the melt polymerization by carbonic diester and aromatic dihydroxy compound prepares above-mentioned aromatic polycarbonate resin.During melt polymerization, preferably, in melt polymerization, in every mole of aromatic dihydroxy compound, with 1 * 10 ^-8To 1 * 10 ^-4The alkali metal compound or the alkaline earth metal compound of mole, and 1 * 10 ^-6To 1 * 10 ^-1The basic cpd of mole is as catalyzer.

In most of examples, above-mentioned metallic impurity are compounds of iron.Preferably determine the consumption of passivator with the content of iron in the aromatic polycarbonate resin.

In the present invention, the aromatic polycarbonate resin (A) that contains the oh group of at least 5% ratio that accounts for all end groups is to react resulting aromatics homo-polycarbonate or Copolycarbonate by carbonate precursor and aromatic dihydroxy compound.In addition, this aromatic polycarbonate can be a branching.Such branching polycarbonate can obtain by multifunctional aromatic substance and aromatic dihydroxy compound and carbonate precursor reaction, thereby has made the thermoplastic polycarbonate of branching.

Molecular weight for aromatic polycarbonate resin (A) component has no particular limits, but viewpoint from reality, the limiting viscosity of this component [η] preferably should be limited in 0.3～0.7, and described viscosity is to use ubbelohde viscometer to measure in 20 ℃ vinylchlorid.

The preparation method of described polycarbonate itself also is a known technology.Specifically, described polycarbonate can prepare by carbonic diester and aromatic dihydroxy compound (for example dihydric phenol) transesterification reaction when the molten state.Perhaps, can prepare by the method (particularly interfacial) that phosgene and aromatic dihydroxy compound (for example, dihydric phenol) react in liquor.The preparation method of polycarbonate has been described: the flat 2-175723 of Japanese unexamined patent open (Kokai), the flat 2-124934 of Japanese unexamined patent open (Kokai), United States Patent (USP) № 4 in following patent specification, 001,184, United States Patent (USP) № 4,238,569, United States Patent (USP) № 4,238,597 and United States Patent (USP) № 4,474,999.

Scorification will be described in detail belows.

Have no particular limits for aromatic hydroxy compound, can use the various compounds of knowing that have phenolic hydroxyl group.Described compound for example has following general formula: In following formula, Ra and Rb are independently from each other: halogen, and for example chlorine, bromine, fluorine, iodine and with the alkyl group of 1～8 carbon atom, and when Ra and Rb have when a plurality of, promptly when n=2～4 and/or m=2～4, Ra and Rb can be identical or different; N and m are the integer between 0 and 4; X is selected from: singly-bound, the alkylene of 1～8 carbon atom, the alkylidene of 2～8 carbon atoms, the support of the cycloalkanes of 5～15 carbon atoms, the cycloalkanes fork of 5～15 carbon atoms and-S-,-SO-,-SO ₂-,-CO-,-O-key, and the key that is expressed from the next:

Preferred aromatic dihydroxy compound comprises: the dihydroxyl aralkyl, for example:

Two (4-hydroxy phenyl) methane,

1,1-two (4-hydroxy phenyl) ethane,

1,2-two (4-hydroxy phenyl) ethane,

Two (4-hydroxy phenyl)-ditans,

Two (4-hydroxy phenyl)-diphenylethanes,

2,2-two (4-hydroxy phenyl) propane,

2,2-two (4-hydroxy phenyl) butane,

1,1-two (4-hydroxy phenyl) hexanaphthene,

Two (3,5-dimethyl-4-hydroxy phenyl) methane,

1,1-two (3,5-dimethyl-4-hydroxy phenyl) ethane,

1,2-two (3,5-dimethyl-4-hydroxy phenyl) ethane,

2,2-two (3,5-dimethyl-4-hydroxy phenyl) propane,

2,2-two (3,5-dimethyl-4-hydroxy phenyl) butane,

Two (3,5-dimethyl-4-hydroxy phenyl)-phenyl-methane,

Two (3,5-dimethyl-4-hydroxy phenyl)-phenylbenzene-methane,

Two (3,5-two chloro-4-hydroxy phenyls) methane,

2,2-two (3,5-two chloro-4-hydroxy phenyls) methane,

Two (3,5-two bromo-4-hydroxy phenyls) methane,

2,2-two (3,5-two bromo-4-hydroxy phenyls) propane, etc.; The dihydroxyl aryl sulfone, for example,

Two (4-hydroxy phenyl) sulfone,

Two (3,5-dimethyl-4-hydroxy phenyl) sulfone,

Two (3,5-two bromo-4-hydroxy phenyls) sulfone etc.; The dihydroxyl aryl ethers, for example,

Two (4-hydroxy phenyl) ether,

Two (3,5-dimethyl-4-hydroxy phenyl) ether,

Two (3,5-two bromo-4-hydroxy phenyls) ether etc.; Dihydroxyl aryl sulphur, for example,

Two (4-hydroxy phenyl) sulphur,

Two (3,5-dimethyl-4-hydroxy phenyl) sulphur,

Two (3,5-two bromo-4-hydroxy phenyls) sulphur etc.; The dihydroxyl aryl ketones, for example,

4,4 '-dihydroxy benzophenone; Or Suo Fakesong (sulfoxones), as,

Two ((4-hydroxy phenyl) Suo Fakesong.

In these materials, more preferably, 2,2-pair-(4-hydroxy phenyl) propane (being referred to as dihydroxyphenyl propane or BPA usually).

Except that above-mentioned material, in the time of in mixing Copolycarbonate, also can be with following material as aromatic dihydroxy compound, described material has, the compound that following formula is represented: Rf is alkyl or its halogenide with 1-10 carbon atom in the formula, or halogen atom, and p is 0～4 integer, for example Resorcinol, or the Resorcinol that replaces, as:

The 3-methylresorcinol,

The 3-ethyl resorcinol,

3-propyl group Resorcinol,

3-butyl Resorcinol,

The 3-tert-butyl resorcin,

3-phenyl Resorcinol,

3-cumyl Resorcinol,

2,3,4,6-tetrafluoro Resorcinol,

2,3,4,6-tetrabromo Resorcinol etc.; Pyrocatechol; The quinhydrones of chloranil or replacement, as

The 3-toluhydroquinone,

3-ethyl quinhydrones,

3-propyl group quinhydrones,

The 3-butylhydroquinone,

The 3-tertiary butylated hydroquinone,

3-phenyl quinhydrones,

3-cumyl quinhydrones,

2,3,5, the 6-duroquinol,

2,3,5,6-tetra-tert quinhydrones,

2,3,5,6-tetrafluoro quinhydrones,

2,3,5,6-tetrabromo quinhydrones, etc.; And be expressed from the next 2,2,2 ', 2 '-tetrahydrochysene-3,3,3 ', 3 '-tetramethyl--1, two (the 1H-indenes)-7 of 1 '-spiral shell, 7 '-diphenol, etc.; And specially enroll as a reference United States Patent (USP) № 5 herein, 703,1 of the replacement of pointing out in 197 the 6th hurdles the 10th～24 row, 2-indan bisphenol base compound, wherein most preferred this compounds is the 5-hydroxyl-3-(4-hydroxy phenyl) 1 with following structural structure, 1,3-trimethylammonium (1, the 2-indane).

In addition, can use these aromatic hydroxy compounds separately, or two or more compounds wherein are used in combination.

Have no particular limits for carbonic diester, that can mention as an example has: diphenyl carbonate, carboxylol ester, carbonic acid two (chloro-phenyl-) ester, the carbonic acid m-tolyl ester, carbonic acid dinaphthyl ester, carbonic acid two (phenylbenzene) ester, diethyl carbonate, methylcarbonate, dibutyl carbonate, carbonic acid two cyclohexyls, or the like, but be not limited to these materials.The preferred diphenyl carbonate that uses.

In addition, can use described these carbonic ethers or be used in combination separately with its two or more.

Except that these materials, can also comprise dicarboxylic acid or dicarboxylic ester as acidic components.The aromatic dicarboxylic acid component is for example:

Terephthalic acid,

M-phthalic acid,

Terephthaldehyde's diphenyl phthalate,

Diphenylisophthalate, etc.; Can be cited as the aliphatic dicarboxylic acid compound's of dicarboxylic acid or dicarboxylic ester example, as,

Succinic Acid,

Pentanedioic acid,

Hexanodioic acid,

Pimelic acid,

Suberic acid,

Nonane diacid,

Sebacic acid,

11 bisgallic acids,

Dodecandioic acid,

The sebacic acid diphenyl ester,

Ten a pair of diphenyl phthalates,

The dodecandioic acid diphenyl ester, or the like and the example of alicyclic dicarboxylic acid's compound, as,

The cyclopropane dicarboxylic acid,

1, the 2-cyclobutane dicarboxylic acid,

1, the 3-cyclobutane dicarboxylic acid,

1,2-pentamethylene dicarboxylic acid,

1,3-pentamethylene dicarboxylic acid,

1,2-tetrahydrobenzene dicarboxylic acid,

1,3-tetrahydrobenzene dicarboxylic acid,

1,4-tetrahydrobenzene dicarboxylic acid,

Cyclopropane dicarboxylic acid's diphenyl ester,

1,2-cyclobutane dicarboxylic acid diphenyl ester,

1,3-cyclobutane dicarboxylic acid diphenyl ester,

1,2-pentamethylene dicarboxylic acid diphenyl ester,

1,3-pentamethylene dicarboxylic acid diphenyl ester,

1,2-tetrahydrobenzene dicarboxylic acid diphenyl ester,

1,3-tetrahydrobenzene dicarboxylic acid diphenyl ester,

1,4-tetrahydrobenzene dicarboxylic acid diphenyl ester.Or the like.

Can use these dicarboxylic acid or dicarboxylic ester separately in addition, or two or more mixing ground are wherein used.

Preferably, the amount that is included in dicarboxylic acid in the above-mentioned carbonic diester or dicarboxylic ester is lower than 30 moles of % for being lower than 50 moles of %, being more preferably.

When the preparation aromatic polycarbonate, can use the polyfunctional compound who has three functional groups in the molecule at least with aromatic dihydroxy compound and carbonic diester.Preferably, these polyfunctional compounds have compound phenolic hydroxyl group or carboxyl.Particularly, the compound that more preferably comprises three phenolic hydroxyl groups.

The concrete example of these preferred compounds has:

1,1,1-three (4-hydroxy phenyl) ethane,

2,2 ', 2 " (4-hydroxy phenyl)-diisopropylbenzene(DIPB)-three,

Alpha-Methyl-α, α ', α "-three (4-hydroxy phenyls)-1, the 4-diethylbenzene,

α, α ', α "-three (4-hydroxy phenyls)-1,3, the 5-tri-isopropyl benzene,

The fluoro glycine,

4,6-methyl-2,4,6-three (4-hydroxy phenyl) heptane-2,

1,3,5-three (4-hydroxy phenyl) benzene,

2,2-two (4,4 ' (4,4 '-hydroxy phenyl) cyclohexyl) propane,

Trimellitic acid,

1,3, the 5-benzene tricarbonic acid,

1,2,4, the 5-pyromellitic acid, or the like.

In addition, more by preferably, use 1,1,1-three (4-hydroxy phenyl) ethane; α, α ', α "-three (4-hydroxy phenyls)-1,3, the 5-tri-isopropyl benzene, or the like.

Preferably, polyfunctional compound's consumption is counted with every mole of aromatic dihydroxy compound and is lower than 0.03 mole, is more preferably 0.002～0.02 mole, especially by preferably 0.01～0.02 mole.

In aromatic polycarbonate, the amount of terminal hydroxy group depends on the mol ratio of raw material, i.e. the mol ratio of aromatic dihydroxy compound and carbonic diester.For example, when with dihydroxyphenyl propane as aromatic dihydroxy compound and with diphenyl carbonate when the carbonic diester, the end group in the polycarbonate will be (I) by bis-phenol (A) derive remaining phenolic group that obtains and the phenyl group of (II) being derived and being obtained by diphenyl carbonate.If increase the mol ratio of bis-phenol (A), so, the equivalence ratio ((I)/(II)) of phenol end group (I) and non-phenol end group (II) will increase in the polycarbonate that so forms.

When using scorification to prepare polycarbonate, the mol ratio of bis-phenol (A) (aromatic dihydroxy compound) is bigger usually, and the amount of phenol end group is at least 5% of total end group in the aromatic polycarbonate that so obtains.

In addition, when using scorification to prepare polycarbonate by this way, usually with alkali metal compound or alkaline earth metal compound and basic cpd as catalyzer.Specifically, as preferred alkali metal compound or alkaline earth metal compound, adducible have, the organic salt of alkali metal compound or alkaline earth metal compound, inorganic salt, oxide compound, oxyhydroxide, hydride or alcoholate.

Specifically, as alkali metal compound, adducible have: sodium hydroxide, potassium hydroxide, lithium hydroxide, sodium bicarbonate, saleratus, lithium bicarbonate, yellow soda ash, salt of wormwood, Quilonum Retard, sodium acetate, potassium acetate, lithium acetate, sodium stearate, potassium stearate, lithium stearate, Sodim Boro Hydride, the bromine lithium hydride, phenyl Sodium Bromide, Sodium Benzoate, potassium benzoate, lithium benzoate, Sodium phosphate dibasic, dipotassium hydrogen phosphate, phosphoric acid hydrogen two lithiums, the sodium salt of dihydroxyphenyl propane, di-potassium, dilithium salt, the sodium salt of phenol, sylvite, lithium salts, or the like.

Specifically, as alkaline earth metal compound, adducible have: calcium hydroxide, hydrated barta, magnesium hydroxide, strontium hydroxide, Calcium hydrogen carbonate, barium bicarbonate, Magnesium hydrogen carbonate, strontium bicarbonate, lime carbonate, barium carbonate magnesiumcarbonate, Strontium carbonate powder, lime acetate, barium acetate, magnesium acetate, strontium acetate, calcium stearate, barium stearate, Magnesium Stearate, strontium stearate, or the like.

In addition, above-mentioned alkali metal compound or alkaline earth metal compound also can use two or more mixing ground wherein.In addition, also alkali metal compound and alkaline earth metal compound can be used in combination.

For described these alkali metal compounds or alkaline earth metal compound, preferably use in every mole of above-mentioned aromatic dihydroxy compound, be 1 * 10 ^-8To 1 * 10 ^-4Mole is more preferably from 1 * 10 ^-7To 2 * 10 ^-6Mole is preferably 1 * 10 especially ^-7To 8 * 10 ^-7The alkali metal compound or the alkaline earth metal compound of mole.

As catalyzer, if the consumption of alkali metal compound or alkaline earth metal compound counts 1 * 10 with every mole of aromatic dihydroxy compound ^-8To 1 * 10 ^-4Mole can make the polymkeric substance with high polymerization activity.

In addition, basic cpd can be used with alkali metal compound or alkaline earth metal compound.Described these basic cpds for example demonstrate and are easy to decompose at high temperature, and this will be desirable.Specifically can quote following compound as proof, that is:

Have alkyl, aryl, aralkyl, or the like the ammonium hydroxide compound, as Tetramethylammonium hydroxide (Me ₄NOH), tetraethyl ammonium hydroxide (Et ₄NOH), TBAH (Bu ₄NOH), trimethyl benzyl ammonium hydroxide ((φ-CH ₂) (M) ₃NOH),

Tertiary amine, as Trimethylamine 99, triethylamine, dimethyl benzylamine, triphenylamine, or the like;

By R ₂The secondary amine that NH represents (in the formula, R is an aryl, alkyl, phenol, tolyl for example methyl, ethyl, or the like);

By RNH ₂The primary amine of expression (R is with above-mentioned identical in the formula);

Imidazoles, as glyoxal ethyline, 2-phenylimidazole, or the like;

Basic salt is as ammonia, tetramethyl-bromine hydrogenation ammonium (Me ₄NBH ₄), tetrabutyl bromine hydrogenation ammonium (Bu ₄NBH ₄), tetrabutyl tetraphenyl ammonium borate (Bu ₄NB (Ph) ₄), tetramethyl tetraphenyl ammonium borate (Me ₄NB (Ph) ₄), or the like and

Phosphonium compounds, as four methyl phosphonium hydroxides, tetrem base phosphonium hydroxides, tetraphenyl phosphonium hydroxides, or the like.

In these materials, preferably use the tetra-alkyl ammonium hydroxide compound, particularly, comprise little metal impurity, be used for the tetra-alkyl ammonium hydroxide compound of electronic applications.

As those above-mentioned basic cpds, its preferable amount in every mole of aromatic dihydroxy compound, is 1 * 10 ^-6To 1 * 10 ^-1Mole, more preferably 1 * 10 ^-5To 1 * 10 ^-2Mole.

If two kinds of alkali metal compounds or two kinds of alkaline earth metal compounds are used in combination with above-mentioned consumption with basic cpd, can enough fast speed carry out polycondensation, and preferably can form high-molecular weight polymer with high polymerization activity.

When in melt phase polycondensation, using as during above-mentioned those catalyzer, preferably by adding the alkalescence that acidic cpd neutralizes or reduces reaction product.What can be used as described acidic substance has: sulfonic acid such as Phenylsulfonic acid, and tosic acid, or the like; Sulphonate such as methyl benzenesulfonate, ethyl benzenesulfonat, the Phenylsulfonic acid butyl ester, the Phenylsulfonic acid monooctyl ester, the Phenylsulfonic acid phenyl ester, methyl tosylate, ethyl p-toluenesulfonate, butyl p-toluenesulfonate, the tosic acid monooctyl ester, the tosic acid phenyl ester, or the like.

In scorification,, therefore, preferably after catalyst neutralisation, under reduced pressure polymkeric substance is handled owing to do not carry out purification related in the phosgenation substantially.

When carrying out described reduced pressure treatment, have no particular limits for treatment facility, but also can use the reactor that depressurized system is housed, or use the extruding machine that depressurized system is housed.

When using described reaction vessel, can use vertical or horizontal jar shape reactor, but preferably use horizontal jar shape reactor.

The reduced pressure treatment of using aforesaid reactor to carry out is at 0.05～750mmHg, preferably carries out being lower than under the pressure of 0.05～5mmHg.

When using extruding machine, when preferably carrying out described reduced pressure treatment and being about 10 seconds to 15 minutes, when using reactor, the preferably treatment time was about 5 minutes to 3 hours.In addition, preferably carry out reduced pressure treatment at about 240 ℃ to 350 ℃.

In addition, when in extruding machine, carrying out reduced pressure treatment, exhaust single shaft extruding machine or twin shaft extruding machine can be used, and also granulation can be carried out when in extruding machine, carrying out reduced pressure treatment.

When carrying out reduced pressure treatment in extruding machine, reduced pressure treatment is at about 1～750mmHg, preferably carries out under the pressure at about 5～700mmHg.

Carry out aforesaid processing, will reduce or eliminate the starting monomer that remains in the polycarbonate fully.

In addition, except that aromatic dihydroxy compound and carbonate precursor being reacted the method for preparing, make the compound reaction that has oh group in addition and form the method for polycarbonate resin by aforesaid.For example, mix, can easily obtain having the polycarbonate of any content terminal hydroxy groups by dihydroxyphenyl propane is added in the carbonate resin and in extruding machine.Beyond dewatering, also can be used for previous polycarbonate, have the various aromatic dihydroxy compounds of three phenolic hydroxyl groups as the compound that has described oh group at least.

Having metallic impurity deleterious effect, that be present in the aromatic polycarbonate for fading may be transition metal.Specifically these metals are: Ti, Fe, Cr, Cu, Zu, V, Mo, Co, or the like.In polycarbonate, these metals usually are ionized, and exist with the form of ionic compound.Ionized metal is easy to form salt with other compound (being present in a small amount of organic and mineral compound in the polycarbonate), thereby forms title complex.These metals or metal ion compound impel polycarbonate to fade, and cause the reduction of molecular weight.In addition, these metal ions form halogenide, as muriate.What people had known is that chlorine will remain in the polycarbonate that uses the preparation of halogen method.For example, the clear 59-22743 of the Japanese Patent of having examined (KoKoKu) points out that this residual volume is that per 100 weight part polycarbonates are 0.005 weight part.So a large amount of chlorine is easy to form muriate with metal reaction, and this not only will promote thermolysis, but also will make the hydrolytic resistance variation.In the polycarbonate that uses the phosgenation preparation, should optimize passivator formula by meticulous consideration to existing impurity level.On the other hand, in the aromatic polycarbonate that comprises oh group that uses the scorification preparation,,, may promote to fade by the reaction of metal in the melt or metal ion and terminal hydroxy group during the polycarbonate and during resin formation.What it is also contemplated that in addition is that other metallic impurity except that transition metal also will have same deleterious effect.Specifically, adducible have: Al, the B, Sn and the Sb that show the Lewis acid characteristic.These metal doping may be because due to the employed raw material, or in that preparatory phase and/or shaping stage took place.

Iron cpd is special trouble, and it will make polymkeric substance have the yellowness index of increase after pressurize, and produce muddy after hydrolysis experiment.Though iron level is not vital, when the content of iron cpd in polycarbonate that calculates with iron is low to moderate 0.01ppm muddiness and yellowing will take place.When do not having an amount of phosphoric acid in the presence of iron level when reaching 0.02～0.03ppm, the haze value after the hydrolysis will make said composition can not be used for strict purposes.When the content of the iron cpd that calculates with iron is 0.1,0.2 or during 0.3ppm, it is essential, should exist an amount of passivator to meet the strict standard of these strict purposes in the composition.Therefore, the iron cpd that calculates on a small quantity that exists with any amount with iron, for the strict quality standard that satisfies strict purposes all is deleterious, but surprisingly, exist as the words of the passivator of amount ranges pointed among the present invention will be eliminated quality problems owing to the melt polycarbonate that exists iron cpd to cause.

The aromatic polycarbonate resin composition of one of embodiment of the present invention is characterized in that, comprises phosphoric acid and above-mentioned aromatic polycarbonate resin.For every mole in being included in aromatic polycarbonate resin foreign metal, the consumption of wishing phosphoric acid be at least 1 mole, more preferably be at least 3 moles, more preferably be at least 5 moles and should be lower than 100 moles, more preferably also should be lower than 50 moles, more preferably should also be lower than 25 moles.If add phosphoric acid, can keep acceptable thermostability, but its hydrolytic resistance will descend obviously more than above-mentioned consumption.Therefore, the consumption that especially it is desirable for phosphoric acid is lower than the aromatic polycarbonate resin of 2ppm.Therefore, the purity of control aromatic polycarbonate resin itself is important.In addition, final preparatory phase at scorification, with regard to final product is extremely stable and pellet itself has with regard to the qualified color, is in molten and then during granulation at polycarbonate resin, by being extremely effective by the extruding machine a spot of like this phosphoric acid of interpolation (and its additive).

The aromatic polycarbonate resin composition of second embodiment of the present invention is characterised in that: comprise sulfide compound and above-mentioned aromatic polycarbonate resin.Sulfide compound has been eliminated the deleterious effect of metallic impurity, and to high high-temp stability, particularly the phase stability of checking colors has positive effect.The example of sulfide compound comprises: four (methylene radical-3-dodecyl thiopropionate) methane and two-tridecyl-thiopropionate.The content of sulfide compound, in every mole of metallic impurity (being preferably every moles iron) that are included in the aromatic polycarbonate resin, be 1 mole or above, be preferably 50 moles or above, particularly preferably be 100 moles or more than, and this content should be 1000 moles or following, be preferably 800 moles or following, especially be preferably 500 moles or below.If add the more thioether of volume, can not keep favourable thermostability, and hydrolytic resistance will descend significantly also.For aromatic polycarbonate resin, the thioether consumption that is lower than 500ppm is particularly preferred, and therefore, the purity of control polycarbonate itself is important.In addition, in the final preparatory phase of scorification, with regard to the favourable form and aspect of the thermostability of final product and pellet itself, when polycarbonate resin was in molten, extruding machine adds thioether (and other additive) and carries out granulation and obtain final product was extremely effective.

The aromatic polycarbonate resin composition of third embodiment of the invention is characterised in that and comprises phosphorous acid diester and above-mentioned aromatic polycarbonate resin.The phosphorous acid diester has been eliminated the deleterious effect of metallic impurity, and has produced the effect of high high-temp stability, and the phase stability of particularly checking colors has produced effect.The example of described phosphorous acid diester is the compound with following structural formula:

R ^dO-P (OR ^e) OH is in this structure, Rd and Re represent alkyl independently, aryl, or alkaryl.Preferred example comprises: hydrogen phosphite diphenyl ester, hydrogen phosphite two (nonyl phenyl) ester, hydrogen phosphite two (2, the 4-di-tert-butyl-phenyl) ester, hydrogen phosphite diformazan phenyl ester and hydrogen phosphite two (to tert-butyl-phenyl) ester.These materials can use separately or be used in combination with two or more.The phosphorous acid diester that more preferably has aromatic group.

The content of phosphorous acid diester is included in metallic impurity in the aromatic polycarbonate resin, is preferably with every moles iron in every mole, be 1 mole or above, be preferably 50 moles or above, especially be preferably 100 moles or more than, but this content should be 1,000 mole or following, be preferably 800 moles or following, especially be preferably 500 moles or below.If add bigger amount, can not keep useful thermostability, and hydrolytic resistance will descend significantly also.For aromatic polycarbonate resin, the consumption that is less than 500 moles is particularly preferred, and therefore, the purity of control polycarbonate itself is crucial.In addition, consider the thermostability and the useful form and aspect of pellet itself of final product, last preparatory phase at scorification, when polycarbonate resin is handled molten state, by the extruding machine place this phosphorous acid diester is added with other additive, carry out granulation then and obtain final product, this will be effective especially.

The aromatic polycarbonate resin composition of the 4th embodiment of the present invention is characterised in that described composition comprises nitrogenous heavy metal deactivator and above-mentioned aromatic polycarbonate resin.Therefore this nitrogenous heavy metal deactivator has been eliminated the deleterious effect of metallic impurity, and has the high high-temp stability effect, especially to the stabilization of resin form and aspect.Described nitrogenous heavy metal deactivator is as heavy metal deactivator and commercially available organic compounds containing nitrogen.For example, described compound is the commodity of being sold with trade(brand)name CDA-6 and ZS-90 by AsahiDenka K.K..

Weight with respect to above-mentioned (A) aromatic polycarbonate resin, above-mentioned nitrogenous heavy metal deactivator adds with following ratio: 10ppm or above, be preferably 30ppm or above, more preferably 50ppm or more than, but for 500ppm or following, be preferably 300ppm or following, 200ppm or following more preferably.If add bigger amount, can keep useful thermostability, yet hydrolytic resistance will descend significantly.It is crucial that the purity of polycarbonate itself is controlled.In addition, consider the thermostability and the useful form and aspect of pellet itself of final product, last preparatory phase at scorification, when polycarbonate resin is handled molten state, add nitrogenous heavy metal deactivator (with other additive) by the extruding machine place, carry out granulation then to obtain final product, such method will be effective especially.

Except that above-mentioned each component, in addition, also can be with resin combination of the present invention and thermo-stabilizer, acid scavenger, the stablizer of anti-weather the, releasing agent, pigment, dyestuff, toughener, extender, fire retardant, lubricant, softening agent, static inhibitor, or the like mix mutually.

Thermo-stabilizer is used for further thermally-stabilised aromatic polycarbonate.Can use phosphide and/or phenolic antioxidant.What for example, can mention as the example of phosphide is the compound that is expressed from the next:

P (OR ^c) ₃R in the formula ^cRepresent alicyclic carboxyl, aliphatic carboxyl or aromatic carboxylic groups, each carboxyl can be identical or different.Specifically, what can be used as example is trialkyl phosphite, as:

Trimethyl phosphite

Triethyl-phosphite

Tributyl phosphate

The tricresyl phosphite monooctyl ester

Tricresyl phosphite (2-ethylhexyl) ester

Tris(nonyl phenyl) phosphate

Tridecyl phosphite

Tricresyl phosphite (octadecyl) ester

The tricresyl phosphite stearyl ester

Tricresyl phosphite (2-chloroethyl) ester

Tricresyl phosphite (2,3-two chloropropyls) ester etc.; The tricresyl phosphite cycloalkyl ester, as:

Tricresyl phosphite cyclohexyl etc.; Triaryl phosphites, as:

Triphenyl phosphite

Tricresyl phosphite

Tricresyl phosphite (ethylbenzene) ester

Tricresyl phosphite (2, the 4-di-tert-butyl-phenyl) ester

Tricresyl phosphite (nonyl phenyl) ester

Tricresyl phosphite (hydroxyphenyl) ester, or the like; With the phosphorous acid aralkyl ester, as:

Phosphorous acid phenyl two (Er Benyitongji) ester

Phosphorous acid phenylbenzene (Er Benyitongji) ester

Phosphorous acid phenylbenzene isooctyl acrylate

Phosphorous acid phenyl isooctyl acrylate

Phosphorous acid 2-ethylhexyl diphenyl, or the like.

In addition, also citable have: distearyl pentaerythrityl diphosphite, and two (2, the 4-di-tert-butyl-phenyl) pentaerythritol diphosphites, or the like.

These compounds can use separately or be used in combination.

In these compounds, preferably use aromatics phosphide, particularly tricresyl phosphite (2, the 4-di-tert-butyl-phenyl) ester.

In the art, usually can be with any phenolic compound as oxidation inhibitor, particularly sterically hindered phenolic compound, specifically, what can be used as example has:

Octadecane base-3-(4-hydroxyl-3 ', 5 '-di-tert-butyl-phenyl) propionic ester, four [methylene radical-3-(3 ', 5 '-di-tert-butyl-hydroxy phenyl) propionic acid] methyl esters, 1,1,3-three (2-methyl-4-hydroxyl-5-tert-butyl-phenyl) butane, distearyl-(4-hydroxyl-3-tolyl-5-tertiary butyl) benzyl malonic acid ester, 4-methylol-2, the 6-DI-tert-butylphenol compounds, or the like.These compounds can use separately or be used in combination with two or more.

According to the purity (particularly, depending on the amount of metal ion) of the consumption and aromatic polycarbonate (A) component of passivator (B), it is necessary using thermo-stabilizer.Adding described passivator mainly is in order to prevent the decline of molecular weight between heating period effectively.When independent use phosphide, in 100 weight part aromatic polycarbonates, the consumption of additive is generally and is lower than 0.1 weight part, is preferably and is lower than 0.05 weight part, more preferably is lower than 0.03 weight part, in addition, this consumption at least also should be 0.0005 weight part, more preferably at least also should be 0.001 weight part.When independent use phenolic antioxidant, in 100 weight part aromatic polycarbonates, the consumption of additive be usually less than 0.1 weight part, preferably be lower than 0.05 weight part, more preferably less than 0.03 weight part, in addition, this consumption should be 0.0005 weight part at least, more preferably is at least 0.001 weight part.For demonstrating the effect on thermal of improvement, avoid hydrolysis and prevent mold fouling etc., it will be best using thermo-stabilizer in described scope.In addition, also phosphide and phenolic antioxidant can be used in combination.

For example, will in individual molecule, have the compound of an epoxide group at least as acid scavenger.Specifically, can be used as having of example:

Epoxidized soybean oil

Epoxidised linseed oil

Phenyl glycidyl ether

Glycidyl allyl ether

The tert-butyl-phenyl glycidyl ether

3,4-epoxy hexyl methyl-3 ', 4 '-epoxycyclohexyl carboxylicesters,

3,4-epoxy-6-methyl cyclohexane ylmethyl-3 ', 4 '-epoxy-6 '-methylcyclohexyl carboxylicesters

2,3-epoxycyclohexyl methyl-3 ', 4 '-epoxycyclohexyl carboxylicesters

4-(3,4-epoxy-5-methylcyclohexyl)-butyl-3 ', 4 '-epoxycyclohexyl carboxylicesters

3,4-epoxycyclohexyl oxyethane

Cyclohexyl methyl-3,4-epoxycyclohexyl carboxylicesters

3,4-epoxy-6-methyl cyclohexane ylmethyl-6 '-methylcyclohexyl carboxylicesters

Bisphenol A diglycidyl ether

The tetrabromo-bisphenol glycidyl ether

The 2-glycidyl ester of phthalic acid

The 2-glycidyl ester of hexahydro-phthalic acid

Two-epoxy-cyclopentadienyl ether

Two-epoxy-ethylene glycol

Two-epoxy-cyclohexyl adipic acid ester

The epoxy divinyl

Tetraphenyl oxyethane

Octyl group Resins, epoxy acid esters

Epoxidized polybutadiene

3,4-methyl isophthalic acid, 2-epoxy cyclohexane

3,5-dimethyl-1,2-epoxy cyclohexane

3-methyl-5-the tertiary butyl-1, the 2-epoxy cyclohexane

Octadecyl-2,2-dimethyl-3,4-epoxycyclohexyl carboxylicesters

N-butyl-2,2-dimethyl-3,4-epoxycyclohexyl carboxylicesters

Cyclohexyl-2-methyl-3,4-epoxy-5-methylcyclohexyl carboxylicesters

Octadecyl-3,4-epoxycyclohexyl carboxylicesters

2-ethylhexyl-3 ', 4 '-epoxycyclohexyl carboxylicesters

4,6-dimethyl-2,3-epoxycyclohexyl-3 ', 4 '-epoxycyclohexyl carboxylicesters

4,5-epoxy-tetrahydronaphthalic anhydride

The 3-tertiary butyl-4, the adjacent benzene dicarboxylic acid acid anhydride of 5-epoxy-tetrahydro-

Diethyl-4,5-epoxy-cis-1,2-cyclohexyl dicarboxylic acid ester

Di-n-butyl-3-the tertiary butyl-4,5-epoxy-cis-1,2-cyclohexyl dicarboxylic acid ester, or the like.In these compounds, preferably use alicyclic epoxide compound, particularly preferably use 3,4-epoxycyclohexyl methyl-3 ', 4 '-epoxycyclohexyl carboxylicesters.These compounds can use separately or use with two or more compound together.

It mainly is to show the tart component that the main purpose of acid scavenger is to remove, and can not produce deleterious effects to hydrolytic resistance to cause them.Acid scavenger must add corresponding to the amount of above-mentioned passivator that adds (B) and the thermal inactivation agent of being added.In 100 weight part aromatic polycarbonates, addition is generally and is lower than 0.1 weight part, is preferably and is lower than 0.05 weight part, more preferably is lower than 0.03 weight part; This consumption should be 0.0005 weight part at least and preferably is at least 0.001 weight part in addition.

When the purposes of addressing needs anti-weather, use the stablizer of anti-the weather.As the example of the stablizer of anti-the weather, that can mention has a compound relevant with benzotriazole.Specifically, described compound is as follows:

2-(2 '-hydroxyl-5 '-tolyl) benzotriazole

2-(2 '-hydroxyl-3 ', 5 '-di-tert-butyl-phenyl) benzotriazole

2-(2 '-hydroxyl-the 3 '-tertiary butyl-5 '-tolyl)-5-chlorobenzotriazole

2-(2 '-hydroxyl-5 '-uncle's octyl phenyl) benzotriazole

2-(2 '-hydroxyl-3 ', 5 '-di-tert-pentyl-phenyl) benzotriazole

2-[2 '-hydroxyl-3 '-(3 ", 4 ", 5 " and, 6 "-tetrahydrochysene O-phthalic base (phthalomethyl))-5 '-tolyl] benzotriazole

2,2 '-methylene radical-two [4-(1,1,3, the 3-tetramethyl butyl)-6-(2H-benzotriazole-2-idol acyl) phenol], or the like.

In 100 weight part aromatic polycarbonates, the consumption of the stablizer of anti-the weather is generally and is lower than 0.5 weight part, is preferably and is lower than 0.4 weight part, more preferably is lower than 0.3 weight part, in addition, at least also is 0.05 weight part, more preferably is at least 0.1 weight part.

As releasing agent, the example that can mention has at least a following material that is selected from: the partial ester of aliphatic carboxylic acid and polyvalent alcohol or full ester, siloxane compound and alkenes compounds.Have no particular limits for polyvalent alcohol, can use dibasic alcohol, trivalent alcohol, tetravalent alcohol, pentavalent alcohol and hexavalent alcohol, but preferably make spent glycol, glycerine, TriMethylolPropane(TMP), tetramethylolmethane, or the like.Have no particular limits for aliphatic carboxylic acid, can use saturated and undersaturated aliphatic carboxylic acid.For example, can use hydrogenant animal oil.As carboxylic acid, preferred saturated monovalence lipid acid, especially preferred is the saturated monovalence lipid acid that contains 12～24 carbon atoms.If carbonatoms is less than above-mentioned scope, compare with the lipid acid in the above-mentioned carbon atom scope, exist the trend of infringement resin combination thermostability, in addition, also be easy to generate gas.On the other hand, if carbonatoms more than above-mentioned scope, is compared with the lipid acid in the above-mentioned carbon atom scope, exist the trend of infringement resin combination release property.Specifically, as aliphatic carboxylic acid, that can mention has: dodecylic acid, and tetradecanoic acid, pentadecylic acid, palmitinic acid, margaric acid, stearic acid, nondecylic acid, eicosanoic acid, docosoic acid, Lignoceric acid, or the like.Can be with the example of silicone oil as silicone compounds.Can be with the example of alpha-olefin low polymers as alkenes compounds.

Use releasing agent in the occasion that is needing release property, its consumption is in 100 weight part aromatic polycarbonates, logical for being lower than 0.5 weight part, being preferably and being lower than 0.4 weight part, more preferably being lower than 0.3 weight part; In addition, this consumption also is at least 0.005 weight part, preferably at least also is 0.01 weight part.

Have no particular limits for the method that is used for preparing resin combination of the present invention, can use method commonly used satisfactorily.But common preferred molten mixture method in any case.Though can use little amount of catalyst, be not requisite usually.As having that equipment specifically can be mentioned: extruding machine, Banbury, rolling press (roller), kneader, or the like, but these equipment intermittent action or operate continuouslys.

The present invention will make an explanation according to the following examples, but these embodiment are not construed as limiting the invention.

Should be noted also that the following component of embodiment and Comparative Examples use in addition.(A) be prepared as follows and have the polycarbonate of hydroxyl as its end group:

In 250 liters of jar shape mixing tanks, prepare 0.44 kilomol as the dihydroxyphenyl propane (BPA) of aromatic dihydroxy compound and 0.46 kilomol diphenyl carbonate, and after being evacuated and replacing, carry out fusion at 140 ℃ with nitrogen as carbonic diester.

Then, the temperature of this mixture is risen to 180 ℃, and add 0.000176 molar sodium hydroxide (4 * 10 as catalyzer ^-7The moles/mole dihydroxyphenyl propane) and 0.11 mole of Tetramethylammonium hydroxide (2.5 * 10 ^-4The moles/mole dihydroxyphenyl propane), and to this mixture stirred 30 minutes.

Then, when pressure is reduced to 200mmHg gradually, temperature is risen to 210 ℃.After 30 minutes, when pressure is reduced to 15mmHg gradually, temperature is risen to 240 ℃.Measure the phenol content that distills out simultaneously at maintenance temperature and pressure constant.When not having phenol to be distilled out, this mixture is back under the normal pressure under the nitrogen atmosphere.The time of reacting required is one hour.The limiting viscosity of the reaction product that so obtains [η] is 0.15dl/g.

Use the raise pressure of reactant of toothed gear pump, then it is joined in the centrifugal-film evaporator that promotes reaction.The temperature and pressure of thin-film evaporator is controlled at 270 ℃ and 2mmHg respectively.Then, by toothed gear pump its bottom from vaporizer is joined the aggregation container (L/D=3 that the twin screw level that is controlled at 293 ℃ and 0.2mmHg stirs, rotating diameter=the 220mm of agitating vane, internal volume=20 liter) in, and in 30 minutes the residence time, carry out polymerization.

Then, use toothed gear pump, the polymkeric substance of this molten state joined in the Bitruder (L/D=17.5, barrel zone temperature=285 ℃), to wherein add every part of resin be 0.7ppm to the butyl toluene sulphonate and mix.Then, extrude with line material form by die head and make pellet with cutting knife cutting.

The limiting viscosity of the polymkeric substance that so obtains [η] is 0.51dl/g.12% of the total end group of the terminal fiduciary point of phenols.In addition, use the analysis revealed of flameless atomic absorption spectrometry, be calculated as 0.025ppm with iron as the metal content that metallic impurity comprised.This polycarbonate is called as PC.

In addition, should be noted also that and use Fourier transform infrared spectroscopy (FTIR), by 3,600cm-1 place measurement absorption intensity and measure the OH concentration of phenol end group.By in dichloromethane solvent, record, based on the original molecular-weight average of limiting viscosity (IV) value, measure the concentration of total end group.Use the Schnell formula, i.e. IV=1.23 * 10 ^-4M0.83 (M=viscosity-average molecular weight in the formula) converts this IV value to molecular-weight average.(B) (1) phosphoric acid

Use 50% the aqueous solution (value in the table 1 is the consumption of phosphoric acid)

Embodiment 1 and Comparative Examples 1～3(1) preparation of resin combination is as shown in table 1, and (B) (1) phosphoric acid is mixed with the as above resulting polycarbonate of 100 weight parts (PC).Use single screw extrusion machine (L/D=17.5) to carry out melting mixing, and form pellet at 280 ℃.(2) assessment is performed as follows assessment.Yellowness index

At barrel temperature is 280 ℃, and die temperature is under 80 ℃ the condition, uses 150 tons the mould machine of being made by OkumaCorporation to come the injection-molded item of forming thickness as 3.0mm.Utilize this moulded parts, use transmission method (utilizing by Nippon Denshoku Kogyo Co. ND-1001DP color and color difference meter that Ltd. makes) to come measured X, Y and Z value, and measure yellowness index (YI).

YI=100 * (1.277X-1.060Z)/the Y optical transmittance

According to listed method among the ASTM standard D-1003, use above-mentioned moulded parts to come the measuring light transmissivity.Mist degree

Use is by Nippon Denshoku Kogyo Co., and the NDH-200 instrument that Ltd. makes is measured the mist degree of above-mentioned moulded parts.Hydrolytic resistance

Above-mentioned moulded parts is placed the reactor that is filled with pure water, and place 120 ℃ baking oven to wear out five days.After five days, measure mist degree, and with the telltale of this mist degree as hydrolysis.The stability of the residence time

In the barrel of 320 ℃ above-mentioned mould machines, resin was kept 15 hours.Carry out molding in this temperature then, and measure yellowness index (YI).

The results are shown in Table 1 in above-mentioned assessment.

Embodiment 2～6 and Comparative Examples 4～6(1) preparation of resin combination

Iron (III) salt (in the iron amount described in the table 1) of phosphoric acid and methyl ethyl diketone is mixed with polycarbonate (PC) in ratio shown in the table 1.Prepare resin combination with the method identical, and make pellet with embodiment 1.(2) assessment

Assess with the method identical with embodiment 1.The result is listed in the table 1.

Table 1

	Embodiment 123456	Comparative Examples 123456
			Iron additive amount (ppm) phosphoric acid (ppm) phosphoric acid/iron *(mol ratio)	0 0.1 0.1 0.1 0.1 0.1 1.5 0.5 0.9 1.7 4.9 8.5 41 3 5 10 29 50	0 0 0 0.1 0.1 0.1 0 4.5 9 0 26 52 - 123 246 - 150 300
YI (initial) YI (stopping the back) mist degree (initial) mist degree (behind the hydrolysis experiment)	1.4 1.8 1.6 1.4 1.3 1.3 1.8 2.2 2.1 1.9 1.7 1.7 0.1 0.2 0.2 0.2 0.2 0.2 2.0 5 4.9 4.8 30.1 68.3	1.5 1.3 1.2 2.9 1.3 1.3 2.1 1.6 1.3 4.3 1.7 1.6 0.2 0.1 0.1 0.3 0.2 0.2 0.3 25.3 65 8.6 ＞90 ＞90

^*Phosphoric acid is with respect to mol ratio (B) (2) sulfide compound of iron total amount [being included in the iron in the PC resin and the iron of interpolation]

Four (methylene radical-3-dodecyl propane thioic acid) methane

Embodiment 7 and Comparative Examples 7 and 8(1) preparation of resin combination

With the thioether of component (B) (2) with as the above-mentioned polycarbonate that obtains (PC) carry out fusion, by mixing shown in the table 2, and in single shaft forcing machine (L/D=17.5), carry out melt kneading to make pellet at 280 ℃.(2) assessment

Assess with the method identical with embodiment 1.The result is listed in the table 2.

Embodiment 8 and 9 and Comparative Examples 9 and 10(1) preparation of resin combination

Sulfide compound and the polycarbonate (PC) of the molysite (III) (its amount is shown in the table 2 in iron) of the methyl ethyl diketone of 0.1ppm with amount shown in the table 2 mixed mutually, prepare resin combination and make pellet by the same way as of embodiment 7.(2) assessment

Assess with the method identical with embodiment 1.Its result is listed in the table 2.

Table 2

	Embodiment 789	Comparative Examples 789 10
			Iron additive amount (ppm) sulfide compound (ppm) sulfide compound/iron *(mol ratio)	0 0.1 0.1 50 120 240 100 50 100	0 0 0.1 0.1 0 750 0 3600 - 1500 - 1500
YI (initial) YI (stopping the back) mist degree (initial) mist degree (behind the hydrolysis experiment)	1.4 1.5 1.4 1.6 1.8 1.8 0.2 0.3 0.3 5.1 7.3 12.6	1.5 1.2 2.9 1.5 2.1 1.4 4.3 1.7 0.2 0.2 0.3 0.3 0.3 75.3 8.6 ＞90

^*Sulfide compound is with respect to mol ratio (B) (3) the phosphorous acid diester of iron total amount [being included in the iron in the PC resin and the iron of interpolation]

The hydrogen phosphite diphenyl ester

Embodiment 10 and 11 and Comparative Examples 11 and 12(1) preparation of resin combination

The phosphorous acid diester of component (B) (3) and the polycarbonate (PC) that obtains are as mentioned above carried out fusion, by mixing shown in the table 3, and in single shaft forcing machine (L/D=17.5), carry out melt kneading to make pellet at 280 ℃.(2) assessment

Assess with the method identical with embodiment 1.The results are shown in Table 3.

Embodiment 12 and 13 is with timely ratio 13 and 14(1) preparation of resin combination

Iron (III) salt (its amount is shown in the table 1 with iron) of the methyl ethyl diketone of 0.1ppm is mixed with polycarbonate (PC) mutually with phosphorous acid diester with the component (B) (3) of amount shown in the table 3, and prepare resin combination with the method identical with embodiment 10, make pellet then.(2) assessment

Assess with the method identical with embodiment 1.The results are shown in Table 3.

Table 3

	Embodiment 10 11 12 13	Comparative Examples 11 12 13 14
			Iron amount (ppm) phosphorous acid diester (ppm) phosphorous acid diester/iron that adds *(mol ratio)	0 0 0.1 0.1 5 10 10.4 52 50 100 20 100	0 0 0.1 0.1 0 150 0 780 - 1500 - 1500
YI (during initial) YI (stopping the back) mist degree (during initial) mist degree (behind the hydrolysis experiment)	1.4 1.3 1.6 1.4 1.6 1.5 1.8 1.6 0.2 0.2 0.3 0.2 2.4 5.1 9.3 12.3	1.5 1.3 2.9 1.3 2.1 1.4 4.3 1.5 0.2 0.2 0.3 0.2 0.3 ＞90 8.6 ＞90

^*The phosphorous acid diester is with respect to the nitrogenous heavy metal deactivator of mol ratio (B) (4) of iron total amount [being included in the iron in the PC resin and the iron (mole) of interpolation]:

Adekastab ZS-90 (trade(brand)name is by the organic compound that contains of Asahi Denka K.K. manufacturing).

Embodiment 14 and Comparative Examples 15(1) preparation of resin combination

As shown in table 4 with component (B) (4), promptly nitrogenous heavy metal deactivator is added in the polycarbonate (PC) that so obtains, and uses single shaft forcing machine (L/D=17.5) at 280 ℃ this mixture to be carried out melt kneading, produces pellet thus.(2) assessment is assessed with the method identical with embodiment 1.The result is listed in the table 4.

Embodiment 15 and 16 and Comparative Examples 16 and 17(1) preparation of resin combination

Be added in the polycarbonate (PC) with the ratio of 0.1ppm iron (III) salt (in table 4, illustrating), and add nitrogenous heavy metal deactivator with the amount shown in the table 4 with the iron amount with methyl ethyl diketone.Use the method identical to prepare resin combination and pellet then with embodiment 1.(2) assessment

Assess with the method identical with embodiment 1.The results are shown in Table 4.

Table 4

	Embodiment 14 15 16	Comparative Examples 15 16 17
			The heavy metal deactivator (ppm) that the addition of iron (ppm) is nitrogenous	0 0.1 0.1 50 100 300	0 0.1 0.1 0 0 1000
YI (initial) YI (stopping the back) mist degree (initial) mist degree (behind the hydrolysis experiment)	1.4 1.8 1.6 1.9 2.1 1.9 0.2 0.3 0.3 1.2 4.6 5.3	1.5 2.9 1.5 2.1 4.3 1.8 0.2 0.3 0.4 0.3 8.6 ＞90

Resin combination of the present invention has excellent thermostability, colour stability, and hydrolytic resistance, and in addition, during long molding, the pollution of mould is seldom.Therefore, for the various application that require the transparency, for example optical application such as lens, CD etc., or material of construction such as sheet material, film etc., resin combination of the present invention will be ideal.In addition, by bringing into play its stability, resin combination of the present invention also can be used as the enhanced polycarbonate resin that forms by mixing with filler, as forming alloy with other polymkeric substance, or the like, and have extremely high industrial use value.

Claims (18)

1. poly carbonate resin composition, comprise: the aromatic polycarbonate resin and the metallic impurity that (A) contain the oh group of at least 5% ratio that accounts for all end groups, wherein (A) aromatic polycarbonate resin is that melt polymerization by aromatic dihydroxy compound and carbonic diester prepares, and (B) a certain amount of passivator that is selected from following material, described passivator is: phosphoric acid, its consumption is in every mole of metallic impurity that are included in the component (A), be 1～100 mole, but be not more than 2ppm; Sulfide compound, its consumption is 1～1000 mole in every mole of metallic impurity that are included in the component (A); The phosphorous acid diester, its consumption is 1～1000 mole in every mole of metallic impurity that are included in the component (A); With nitrogenous organic compound, its consumption is 10～500ppm in every weight part aromatic polycarbonate (A).

2. according to the composition of claim 1, also comprising, in every mole of aromatic dihydroxy compound, is 1 * 10 ^-8To 1 * 10 ^-4Alkali metal compound or alkaline earth metal compound and 1 * 10 of mole ^-6To 1 * 10 ^-1The basic cpd of mole.

3. according to the composition of claim 1, wherein metallic impurity are iron cpds.

4. according to the composition of claim 1, wherein (B) is phosphoric acid.

5. according to the composition of claim 4, wherein metallic impurity are iron cpds.

6. according to the composition of claim 5, wherein, the content of the iron cpd that calculates with iron is 0.01ppm.

7. poly carbonate resin composition, comprise: (A) contain the aromatic polycarbonate resin of oh group of at least 5% ratio that accounts for all end groups and iron cpd impurity and (B) phosphoric acid, wherein (A) aromatic polycarbonate resin is that melt polymerization by aromatic dihydroxy compound and carbonic diester prepares, and (B) consumption of phosphoric acid is counted 1～100 mole with every mole of metallic impurity that are included in the component (A), but is not more than 2ppm.

8. according to the composition of claim 1, wherein (B) is sulfide compound.

9. according to the composition of claim 7, wherein metallic impurity are iron cpds.

10. composition according to Claim 8, wherein the content of the iron cpd that calculates with iron is 0.01ppm.

11. according to the composition of claim 1, wherein (B) is the phosphorous acid diester.

12. according to the composition of claim 10, wherein the phosphorous acid diester is selected among the phosphorous acid diester that has aromatic group.

13. according to the composition of claim 11, wherein metallic impurity are iron cpds.

14. according to the composition of claim 12, wherein, the content of the iron cpd that calculates with iron is 0.01ppm.

15. according to the composition of claim 1, wherein (B) is nitrogenous organic compound.

16. according to the composition of claim 14, wherein metallic impurity are iron cpds.

17. according to the composition of claim 15, wherein, the content of the iron cpd that calculates with iron is 0.01ppm.

18. poly carbonate resin composition, comprise: (A) contain 5% or the more aromatic polycarbonate resin and the metallic impurity of the oh group of vast scale that account for all end groups, and the nitrogenous organic compound of (B) counting 10～500ppm with every weight part component (A), make this compound passive metal impurity and and stabilization said composition thus.